<!DOCTYPE html>
<html>
<head>
	<title>九宫格</title>
	<style type="text/css">
		div{
			width:190px;
			height:190px;
			background:#FFA600;
			float:left;
			margin:10px;
			border-radius: 10px;
		}
		body{
			width:700px;
			margin:0 auto;
		}
		button{
			clear:both;
			width:200px;
			height:50px;
			background:#FFF;
			border:none;
			border-radius:10px;
			position:relative;
			left:100px;
		}
		button:hover{
			background:#FFA600;
		}
	</style>
</head>
<body>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<div></div>
	<button id="btnone">开始闪</button>
	<button id="btntwo">结束闪</button>
	<script type="text/javascript" src="index.js"></script>
</body>
</html>